Last month, the former neighborhood watchman listed an original painting on eBay: An 18-by-24-inch canvas featuring a blue, waving American flag with the words, "God, one nation, with liberty and justice for all" emblazoned across it.

"Everyone has been asking what I have been doing with myself. I found a creative, way to express myself, my emotions and the symbols that represent my experiences," the item description for that painting read. "My art work allows me to reflect, providing a therapeutic outlet and allows me to remain indoors."

Zimmerman has been in and out of the spotlight since his July acquittal in the fatal shooting of 17-year-old Trayvon Martin in 2012.

In December, Florida prosecutors said they would not charge Zimmerman after a domestic dispute with his girlfriend in November resulted in his arrest. Previously, he was stopped several times for speeding.

Zimmerman told a judge in November he had $150 to his name and was $2.5 million in debt.

Vowing to keep fighting for his son Trayvon -- even after Zimmerman was acquitted of murder -- Tracy Martin said that his family wants to turn "negative energy" surrounding their plight "into a positive."